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Thread: 3.4l PCM wiring pinout diagrams

  1. #1
    Join Date
    Aug 2008
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    Default 3.4l PCM wiring pinout diagrams

    I have attached some helpful diagrams for those of you with the 3.4 engine and looking to track down that certain wire or adding megasquirt to your setup.






    1997 Camaro RS- Fully built 3.8, a little nitrous and some other stuff
    Owner- http://www.gvperformance.com

    http://www.michiganvisalus.com

  2. #2
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    I'm looking for help please.....I have a 1994 Firebird 3.4L that we are racing in a novice class on an oval track. The car needs to remain virtually stock. My problem is the car was completely rewired and I'm reinstalling the diagnostic plug for the scan tool. From the pin-out diagram provided for the car's PCM above it shows the diagnostic enable if on C9. My problem is the is no wire on my C9 connector. This PCM and wiring harness are original to the car, the diagnostic plug was cut out so I couldn't trace it back. My PCM is #16184737 - what pin is the diagnostic enable?

    Thanks
    RVChaser

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